Adhesive and process of making same.



IINITED STATES PATENT OFFICE.

FREDERICK H. PATCH, MANCHESTER, VIRGINIA.

ADHESIVE AND PROCESS OF MAKING SAME.

iisnsi.

No Drawing.

To all whom it may concern:

Be it known that I, FREDERICK H. PAToH, a citizen of the United States,residing at Manchester, in the county of Chesterfield and State ofVirginia, have invented certain new and useful Improvements in Adhesives and Processes of Making Same, of which the following is aspecification.

My present invention consists in certain improvements in, ormodifications of the invention described and claimed in my former PatentNo. 809,739 of Jan. 9, 1906, whereby the waste-liquor from pulp millsmay be utilized by making the same into an adhesive compound ofcommercial value. In the present case as in the former, I combine withsaid liquor before or after evaporation to proper density, certain oilsor fats which will prevent a product made from the compound fromabsorbing moisture and crumbling. and, in the case of a core forcasting, will facilitate its cleaning out of the casting, and I also addflour to increase the adhesiveness of the compound. hen intended for usewith sands containing none or but a small percentage of loam I alsoaddclay to enable it to pack, and when intended for use with sands whichpack too closely I find an addition of saw dust of great value inopening up or making the cores or product p0- rous.

In the present process of preparingor manufacturing the compound I usethe waste or spent liquor from the paper or pulp-mills or any wasteliquor or prepared solution containing resinous matters, sulfurous acid,and bases such as potash, soda, magnesia. or lime. I also use the wasteor spent liquor from soda pulp-mills and any waste or spent liquorcontaining resinous, dextrin and starch matters.

My invention when carried out to its fullest extent is a process ormethod of treat- Specification of Letters Patent.

Patented 001;. 13, 1914.

Application filed August 10, 1906. Serial N0. 330,068.

Having thus stated what the nature and main feature of my invention is,I will now describe how it can be carried out.

In carrying out the invention I concen-. trate the waste or spentsulfite or soda liquor, etc.,by evaporation to a thickness or density,for example, a specific gravity .of 1.3-1.4 sufiicient to keep a soapyor saponitied substance in suspension. In making the improved adhesivecompound from these above mentioned spent liquors or by-products Ifollow two different methods; to add saponified substances to theconcentrated liquors or to prepare the concentrated liquors in such away that the animal, vegetable, or mineral oils or fats when added tothe preparation are saponified therein;

To procure the soapy or saponified sub stance I take animal, vegetable,or mineral oils or fats and combine therewith a sufficient quantity ofhydrates or carbonates of potassium and sodium,- any compound orcomposition containing potassium or sodium in excess and also resin. Anysoapy or saponified substance, thus procured, is then mixed with theconcentrated liquor in proper quantity as desirable.

If desired to make a compound containing flour-clay or Hour and clay,both these materials are mixed with the concentrated liquor before thesoapy substance is added. Sawdust when used may be added to the mixturebefore or after the addition of the soapy substance as most convenient.The flour may be mixed to the concentrated liquor direct or dissolved ormixed in water and if both flour and clay are used these are mixedtogether dry or with water before mixed with the concentrated liquor.Flour, clay, and saw-dust are added in a quantity as required fordifferent purposes and according to circumstances.

To prepare the concentrated spentsulfite liquor and the by-product suchas may contain saccharine substance so as to saponify oils and fats whenadded, I add'to said liquors hydrates or carbonates of potassium andsodium or any compound or composition containing potassium or sodiumhydrate or carbonate in excess for example the concentrated spent liquorfrom soda pulpmills in a quantity sufficient for the saponification ofthe animal, vegetable or mineral oil or fat that is then added to thecomposition. Flour-clay or flour and clay and also saw-dust, if used,are mlxed with the concentrated liquor before the alkaline matter is orfats, if necessary. In manufacturing the dry compound or compounds Itakeeither of the above said concentrated spent liquors or by-product or anycompound made from them as above described, evaporate it to absolutedryness and then pulverize the residue.

The adhesive liquid and dry compounds are intended chiefly for use asbinders for sand in the foundry practice in making up cores and moldsand in the manufacturing of briquets from coal, charcoal, saw-dust, allkinds of ores, etc., and the above described variations in thecompositions are principally for the purpose of adapting them for usewith diflerent kinds or characters of sand, etc. As it is well knownsome sands contain in themselves clay substance (loam) while others arepractically free from. all clay substance. In one instance, the clay inthe sand itself will obviate the necessity of adding clay to thecomposition to secure the binding qualities desired while in the otherinstance the addition of clay is desirable. By the term loam I mean thenatural substance commonly known by that name.

The leading feature of the'presentinvention consists in adding to theevaporated liquor, which is of a sticky or adhesive nature, whether fromthe soda or sulfite mills, the oils or fats prepared so that they willmix therewith and combining therewith the flour and other ingredientsnecessary to make the composition into a paste-like form, or evaporateto dry form, whereby it will be adapted for the use intended.

Having thus fully described my said invention, what I claim as new anddesire to secure by Letters Patent, is

1. An adhesive compound composed of waste liquor of a sticky or adhesivecharacter combined with a soapy compound and a binding material of theconsistency of flour.

2. An adhesive compound composed of a liquor of a sticky or adhesivenature, saponified oils, and flour, substantially as herein set forth.

3. An adhesive consisting of waste sulfite liquor, soapy compound, andflour, combined, substantially as set forth.

at. The process of treating waste liquors of a sticky or adhesivecharacter, which con.- sist in mixing therewith a quantity of flour,evaporating to a suitable consistency to hold in suspense a soapycomposition, mixing therewith said soapy composition, and evaporating tothe consistency desired substantially as set forth.

5. The process of treating waste liquor of a sticky or adhesivecharacter with flour, and evaporating to dryness and mixing with clayand saw-dust.

6. An adhesive compound composed of waste liquor of a sticky or adhesivecharacter combined with a soapy. or saponified com pound with bindingmaterial added.

7. An adhesive compound composed of concentrated waste liquorscontaining resinous matters dextrin and starch all of a sticky oradhesive character combined with a soapy compound. substantially as setforth.

8. An adhesive compound contalnmg waste sticky liquors, resinousmatters, etc., combined with a binding material of theconsistency offlour and a soapy composition, substantially as set forth.

9. An adhesive compound for use as a bond in molding consisting ofsulfite liquor,

saponified substance, and flour, prepared and combined substantially asset forth.

In witness whereof, I, have hereunto set my hand and seal at Washington,D. G. this second day of August, A. D. nineteen hundred and six.

FREDERICK H. PATCH.

